E commerce website to be built in word-press with interesting design

Due to unforeseen circumstances, my previous website build brief has changed. Thank you to those that quoted, & they are more then welcome to re quote. I now require an E commerce website to be built from scratch using word-press, with an interesting design & logo that is relevant to the industry of health supplements.
I need the site to be easily altered by myself & to include SEO
Also it needs to have the usual items like pay by paypal & contact buttons and probably a few other buttons that we will think of. I would like to be able to leave the site domain where it is already hosted (but currently un built) I will provide text & photos for aprox 20 products & give the necessary text for home page etc.
I would expect a few revisions to be necessary, as is normal on new build. However If the job cannot be done for the price, then please give a figure for the job. As anyone that wishes to accept the price, would be expected to keep to it.
Thanks
Daniel